Mitsubishi Electric CITY MULTI PEFY-P-NMHU-E2 User Manual

13
HWE1212A
TROUBLESHOOTING-How to check the parts
7. TROUBLESHOOTING
7-1. How to check the parts
Parts name Check points
Room temperature
thermistor (TH21)
Liquid pipe thermistor
(TH22)
Gas pipe thermistor
(TH23)
Disconnect the connector, then measure the resistance using a tester.
(Sorrounding temperature 10°C~30°C [50°F~86°F])
Normal Abnormal
(Refer to the <Thermistor characteristic
graph>)4.3kΩ~9.6kΩ Open or short
Transformer
CNT
3T
1
3
CN3T
Disconnect the connector and measure the resistance using a tester.
Normal Abnormal
CNT(1)-(3) App.15Ω
Open or short
CN3T(1)-(3) App.4Ω
Fan motor
PEFY-P15~54
Relay connector
A…Orange
B…Blue
C…Red
D…Brown
E…Black
F…Gray
Thermal protector
Capacitor
BDE
A
L1
F C C
P
B F
D A E
C
C
L2 L3
M
A
Measure the resistance between the terminals using a tester. (at 20°C [68°F])
Unit :Ω
Motor terminal
or
Relay connector
Normal
Abnormal
PEFY-P15,18 PEFY-P24 PEFY-P27,30 PEFY-P36,48,54
M 30.9 24.6 24.0 6.26
Open or short
A 46.9 34.7 29.1 8.19
L1 4.08 2.81 2.94 0.740
L2 8.95 4.03 3.56 0.741
L3 7.77 6.06 4.35 2.07
Linear expansion valve
1
2
3
4
5
6
LEV
White
Yellow
Orange
Blue
Red
Brown
CN60
Disconnect the connector then measure the resistance valve using a tester.
Normal Abnormal
(1)-(5)
White-Red
(2)-(6)
Yellow-Brown
(3)-(5)
Orange-Red
(4)-(6)
Blue-Brown
Open or short
200Ω ±10%
Drain Pump
(
Drain water lift up kit )
1
3
Red
Red
Disconnect the connector then measure
the resistance valve using a tester.
(Sorrounding temperature 20°C~30°C
[68°F~86°F])
Normal Abnormal
399Ω Open or short
<Thermistor characteristic graph>
Room temperature thermistor (TH21)
Liquid pipe thermistor (TH22)
Gas pipe temperature thermistor (TH23)
Drain sensor (DS)
Thermistor R
0
=15kΩ ± 3%
Fixed number of B=3480kΩ ± 2%
Rt=15exp {3480 (
1
273+t
−
1
273
)}
0°C 32°F 15kΩ
10°C 50°F 9.6kΩ
20°C 68°F 6.3kΩ
25°C 77°F 5.2kΩ
30°C 86°F 4.3kΩ
40°C 104°F 3.0kΩ
0
10
20
30
40
50
-20 -10 0 1020304050
Temperature
(˚C)
- 4 1432506886 104 122
[˚F]
Resistance (KΩ)
Drain sensor
(
Drain water lift up kit )
1
3
Measure the resistance between the
terminals using a tester.
(Refer to the <Thermistor characteristic
graph>)
0°C/6.0kΩ, 10°C/3.9kΩ
20°C/2.6kΩ, 25°C/2.2kΩ
30°C/1.8kΩ, 40°C/1.3kΩ

Mitsubishi Electric CITY MULTI PEFY-P-NMHU-E2 Specifications

General

Brand	Mitsubishi Electric
Model	CITY MULTI PEFY-P-NMHU-E2
Category	Air Conditioner
Language	English